By Randy Dotinga HealthDay Reporter ...FRIDAY July 6 (HealthDay News) -- Avatar Hugo and other 3-D mov...Young adults and those sitting close to the screen are more likely tha... 3-D movies are only good as long as you're not feeling terrible sai...Symptoms which are brief and temporary are related to visual disturb...

FRIDAY, July 6 (HealthDay News) -- "Avatar," "Hugo" and other 3-D movies thrill many viewers, but also make some feel sick, a new study finds.

Young adults and those sitting close to the screen are more likely than older viewers to experience blurred vision, nausea and other symptoms while "immersed" in a 3-D [three-dimensional] film, the researchers found.

"3-D movies are only good as long as you're not feeling terrible," said study lead author Shun-Nan Yang, a senior scientist at Pacific University College of Optometry in Forest Grove, Ore.

Symptoms, which are brief and temporary, are related to visual disturbances and motion sickness. But they can be minimized -- at least if you're watching a 3-D movie at home -- by sitting farther back and gaining a wider viewing angle, Yang said.

Also, an eye doctor may help you resolve any vision issues, Yang added.

Hollywood produced many 3-D movies, which enhance the sense of depth perception, in the 1950s, and even then they could make people queasy. As technology has advanced over the last decade or so, 3-D films have boomed in popularity, but the motion-picture industry has yet to quash the motion-sickness factor.

The new study, funded by the technology company Intel, is the latest to look at how 3-D affects people.

The researchers recruited 203 teens and adults to watch the 2009 family film "Cloudy With a Chance of Meatballs" on a 55-inch LCD television. Some watched it in regular 2-D; others viewed it in 3-D. Viewers were seated at different distances and viewing angles, and questioned about previous viewing symptoms, and any symptoms during or after seeing the film.

Twelve percent of the 2-D viewers reported an increase in symptoms of discomfort, compared with 20 percent of the 3-D viewers. Those who watched the 3-D version were likely to report more eye pain, pulling sensation in the eye, blurred vision, double vision, dizziness and disorientation.

Viewers aged 24 to 34 were bothered more by the 3-D images than older viewers, the researchers found.

The most severe problems reported were headaches and nausea, Yang said. Symptoms could increase within 15 minutes after watching the film, he said, although the problems didn't last into the next day.

Watching movies in 3-D is visually challenging because the eyes must adjust to the fixed closeness of the screen and the seeming distance of the 3-D images, he said. If you're in a movie theater, he said, you may experience fewer symptoms while watching 3-D than viewing the film at home.

Older viewers were less sickened by 3-D than younger viewers, possibly because they're less sensitive to visual stimulation or the deterioration of their eyes makes it easier to handle the near/far discrepancy, he said. Younger viewers reported more "immersion" in the 3-D movie.

Yang said it's a mystery why many viewers have visual or physical complaints after watching ordinary movie images on TV. Those people also said they suffered eye problems when they used computer monitors, he said.

If you're watching a 3-D movie at home, Yang said, you might avoid symptoms by changing where you sit to obtain a different viewing angle or adjusting the brightness of the screen or the lighting in the room. "When you sit closer, you are going to perceive the movie as more real, but you'll have more symptoms," he said.

One solution for children bothered by watching 3-D movies is to let them take off their 3-D glasses and simply watch the blurred movie, said eye doctor Dr. James Salz, a clinical professor of ophthalmology at the University of Southern California and spokesman for the American Academy of Ophthalmology.

He's tried that with his own grandchildren, ages 4 to 7. "They don't complain as they seem more comfortable," he said.

(Date:12/8/2016)... , ... December 08, 2016 ... ... Suite 10.2 version gives development continuity to its innovative Unified Instance Manager ... management capacity. In addition, this new version optimizes the unattended auto-dialing system ...

(Date:12/8/2016)... ... 08, 2016 , ... Today’s patients are encouraged to be ... SIGVARIS has created a new line of anti-embolism stockings to help prevent a ... benefits of graduated compression when transitioning from recovery to early rehabilitation. , The ...

(Date:12/8/2016)... , ... December 08, 2016 , ... ... planning services from offices headquartered in Jefferson County, is announcing the launch of ... in Birmingham. , The number of homeless women and children in Birmingham has ...

(Date:12/8/2016)... ... December 08, 2016 , ... Bill Mull ... business owners in and around central Kansas, is joining the Youth Horizons organization ... the region. , Headquartered in Wichita, Youth Horizons works to empower area children ...

(Date:12/7/2016)... NY (PRWEB) , ... December 07, 2016 , ... ... of the drug in their bodies, a researcher at the Icahn School of ... Pediatric Research. , The study found that when young children are exposed to ...

(Date:12/8/2016)... VIEW, Calif. , Dec. 8, 2016 IRIDEX ... intends to offer newly issued shares of common stock, $0.01 ... pursuant to an underwritten public offering. The final terms of ... the time of pricing, and there can be no assurance ... IRIDEX expects to use the net proceeds it ...

(Date:12/8/2016)... KEY FINDINGS The global medical ... Various reasons for growth of the medical lifting sling ... chronic diseases, high recovery cost of injuries and government ... lifting sling refers to an assistive device that helps ... connect to the lift and hold the patient. It ...